All of the options can be considered possible consequences of damage to infrastructure due to flooding, but some are more direct consequences than others. Here’s a brief analysis of each:
a) Pollutants are spread to farmland. - This can occur if flooding contaminates water sources.
b) The flow of goods is decreased or halted. - This is a direct consequence of infrastructure damage, especially to roads and transportation systems.
c) Homes and businesses are washed away. - This is a severe consequence of flooding and can result from damage to buildings and infrastructure.
d) The prices of local crops are lowered. - This is a potential economic consequence, typically resulting from supply and demand dynamics after flooding.
Among these, b) (the flow of goods is decreased or halted) is perhaps the most direct consequence of infrastructure damage due to flooding, as it directly ties to the function of transportation infrastructure. However, if you are looking for the most severe and immediate consequence of flooding itself, c) (homes and businesses are washed away) is also a valid option.
In conclusion, while several consequences could be valid, b) is a clear immediate effect of infrastructure damage due to flooding.